帮助命令接口

返回参数与使用说明。

usage: ascend-fd [-h] {version,parse,diag,blacklist,entity} ...
Ascend Fault Diag
positional arguments:
  {version,parse,diag,blacklist,entity}
    version             show ascend-fd version
    parse               parse origin log files
    diag                diag parsed log files
    blacklist           filter invalid logs by blacklist for parsing
    entity              perform operations on the user-defined faulty entity.
optional arguments:
  -h, --help            show this help message and exit